diff mbox series

[v2,4/6] hwmon: (aquacomputer_d5next) Add infrastructure for Aquaero control reports

Message ID 20230214220221.15003-5-leonard.anderweit@gmail.com (mailing list archive)
State Accepted
Headers show
Series hwmon: (aquacomputer_d5next) Add Aquacomputer Aquaero control | expand

Commit Message

Leonard Anderweit Feb. 14, 2023, 10:02 p.m. UTC
Add information on the Aquacomputer Aquaero control report and disable the
control report checksum for Aquaero. The Aquaero does not use the checksum so
it must be disabled to avoid overwriting the last two bytes of the control
report.

Signed-off-by: Leonard Anderweit <leonard.anderweit@gmail.com>
---
 drivers/hwmon/aquacomputer_d5next.c | 31 ++++++++++++++++++++++++-----
 1 file changed, 26 insertions(+), 5 deletions(-)

Comments

Guenter Roeck March 12, 2023, 5:44 p.m. UTC | #1
On Tue, Feb 14, 2023 at 11:02:19PM +0100, Leonard Anderweit wrote:
> Add information on the Aquacomputer Aquaero control report and disable the
> control report checksum for Aquaero. The Aquaero does not use the checksum so
> it must be disabled to avoid overwriting the last two bytes of the control
> report.
> 
> Signed-off-by: Leonard Anderweit <leonard.anderweit@gmail.com>

Applied. And again:

WARNING: Possible unwrapped commit description (prefer a maximum 75 chars per line)
#85:
control report checksum for Aquaero. The Aquaero does not use the checksum so

Please keep in mind that you are causing extra work for me.

Guenter

> ---
>  drivers/hwmon/aquacomputer_d5next.c | 31 ++++++++++++++++++++++++-----
>  1 file changed, 26 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/hwmon/aquacomputer_d5next.c b/drivers/hwmon/aquacomputer_d5next.c
> index 535d2fc0e55c..eb185318098a 100644
> --- a/drivers/hwmon/aquacomputer_d5next.c
> +++ b/drivers/hwmon/aquacomputer_d5next.c
> @@ -56,6 +56,7 @@ static const char *const aqc_device_names[] = {
>  #define SERIAL_PART_OFFSET		2
>  
>  #define CTRL_REPORT_ID			0x03
> +#define AQUAERO_CTRL_REPORT_ID		0x0b
>  
>  /* The HID report that the official software always sends
>   * after writing values, currently same for all devices
> @@ -67,6 +68,14 @@ static u8 secondary_ctrl_report[] = {
>  	0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x34, 0xC6
>  };
>  
> +/* Secondary HID report values for Aquaero */
> +#define AQUAERO_SECONDARY_CTRL_REPORT_ID	0x06
> +#define AQUAERO_SECONDARY_CTRL_REPORT_SIZE	0x07
> +
> +static u8 aquaero_secondary_ctrl_report[] = {
> +	0x06, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00
> +};
> +
>  /* Report IDs for legacy devices */
>  #define POWERADJUST3_STATUS_REPORT_ID	0x03
>  
> @@ -94,6 +103,7 @@ static u8 secondary_ctrl_report[] = {
>  #define AQUAERO_NUM_VIRTUAL_SENSORS		8
>  #define AQUAERO_NUM_CALC_VIRTUAL_SENSORS	4
>  #define AQUAERO_NUM_FLOW_SENSORS		2
> +#define AQUAERO_CTRL_REPORT_SIZE		0xa93
>  
>  /* Sensor report offsets for Aquaero fan controllers */
>  #define AQUAERO_SENSOR_START			0x65
> @@ -531,12 +541,16 @@ static int aqc_send_ctrl_data(struct aqc_data *priv)
>  	int ret;
>  	u16 checksum;
>  
> -	/* Init and xorout value for CRC-16/USB is 0xffff */
> -	checksum = crc16(0xffff, priv->buffer + priv->checksum_start, priv->checksum_length);
> -	checksum ^= 0xffff;
> +	/* Checksum is not needed for Aquaero */
> +	if (priv->kind != aquaero) {
> +		/* Init and xorout value for CRC-16/USB is 0xffff */
> +		checksum = crc16(0xffff, priv->buffer + priv->checksum_start,
> +				 priv->checksum_length);
> +		checksum ^= 0xffff;
>  
> -	/* Place the new checksum at the end of the report */
> -	put_unaligned_be16(checksum, priv->buffer + priv->checksum_offset);
> +		/* Place the new checksum at the end of the report */
> +		put_unaligned_be16(checksum, priv->buffer + priv->checksum_offset);
> +	}
>  
>  	/* Send the patched up report back to the device */
>  	ret = hid_hw_raw_request(priv->hdev, priv->ctrl_report_id, priv->buffer, priv->buffer_size,
> @@ -1280,6 +1294,8 @@ static int aqc_probe(struct hid_device *hdev, const struct hid_device_id *id)
>  		priv->num_flow_sensors = AQUAERO_NUM_FLOW_SENSORS;
>  		priv->flow_sensors_start_offset = AQUAERO_FLOW_SENSORS_START;
>  
> +		priv->buffer_size = AQUAERO_CTRL_REPORT_SIZE;
> +
>  		priv->temp_label = label_temp_sensors;
>  		priv->virtual_temp_label = label_virtual_temp_sensors;
>  		priv->calc_virt_temp_label = label_aquaero_calc_temp_sensors;
> @@ -1443,6 +1459,11 @@ static int aqc_probe(struct hid_device *hdev, const struct hid_device_id *id)
>  		priv->firmware_version_offset = AQUAERO_FIRMWARE_VERSION;
>  
>  		priv->fan_structure = &aqc_aquaero_fan_structure;
> +
> +		priv->ctrl_report_id = AQUAERO_CTRL_REPORT_ID;
> +		priv->secondary_ctrl_report_id = AQUAERO_SECONDARY_CTRL_REPORT_ID;
> +		priv->secondary_ctrl_report_size = AQUAERO_SECONDARY_CTRL_REPORT_SIZE;
> +		priv->secondary_ctrl_report = aquaero_secondary_ctrl_report;
>  		break;
>  	case poweradjust3:
>  		priv->status_report_id = POWERADJUST3_STATUS_REPORT_ID;
diff mbox series

Patch

diff --git a/drivers/hwmon/aquacomputer_d5next.c b/drivers/hwmon/aquacomputer_d5next.c
index 535d2fc0e55c..eb185318098a 100644
--- a/drivers/hwmon/aquacomputer_d5next.c
+++ b/drivers/hwmon/aquacomputer_d5next.c
@@ -56,6 +56,7 @@  static const char *const aqc_device_names[] = {
 #define SERIAL_PART_OFFSET		2
 
 #define CTRL_REPORT_ID			0x03
+#define AQUAERO_CTRL_REPORT_ID		0x0b
 
 /* The HID report that the official software always sends
  * after writing values, currently same for all devices
@@ -67,6 +68,14 @@  static u8 secondary_ctrl_report[] = {
 	0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x34, 0xC6
 };
 
+/* Secondary HID report values for Aquaero */
+#define AQUAERO_SECONDARY_CTRL_REPORT_ID	0x06
+#define AQUAERO_SECONDARY_CTRL_REPORT_SIZE	0x07
+
+static u8 aquaero_secondary_ctrl_report[] = {
+	0x06, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00
+};
+
 /* Report IDs for legacy devices */
 #define POWERADJUST3_STATUS_REPORT_ID	0x03
 
@@ -94,6 +103,7 @@  static u8 secondary_ctrl_report[] = {
 #define AQUAERO_NUM_VIRTUAL_SENSORS		8
 #define AQUAERO_NUM_CALC_VIRTUAL_SENSORS	4
 #define AQUAERO_NUM_FLOW_SENSORS		2
+#define AQUAERO_CTRL_REPORT_SIZE		0xa93
 
 /* Sensor report offsets for Aquaero fan controllers */
 #define AQUAERO_SENSOR_START			0x65
@@ -531,12 +541,16 @@  static int aqc_send_ctrl_data(struct aqc_data *priv)
 	int ret;
 	u16 checksum;
 
-	/* Init and xorout value for CRC-16/USB is 0xffff */
-	checksum = crc16(0xffff, priv->buffer + priv->checksum_start, priv->checksum_length);
-	checksum ^= 0xffff;
+	/* Checksum is not needed for Aquaero */
+	if (priv->kind != aquaero) {
+		/* Init and xorout value for CRC-16/USB is 0xffff */
+		checksum = crc16(0xffff, priv->buffer + priv->checksum_start,
+				 priv->checksum_length);
+		checksum ^= 0xffff;
 
-	/* Place the new checksum at the end of the report */
-	put_unaligned_be16(checksum, priv->buffer + priv->checksum_offset);
+		/* Place the new checksum at the end of the report */
+		put_unaligned_be16(checksum, priv->buffer + priv->checksum_offset);
+	}
 
 	/* Send the patched up report back to the device */
 	ret = hid_hw_raw_request(priv->hdev, priv->ctrl_report_id, priv->buffer, priv->buffer_size,
@@ -1280,6 +1294,8 @@  static int aqc_probe(struct hid_device *hdev, const struct hid_device_id *id)
 		priv->num_flow_sensors = AQUAERO_NUM_FLOW_SENSORS;
 		priv->flow_sensors_start_offset = AQUAERO_FLOW_SENSORS_START;
 
+		priv->buffer_size = AQUAERO_CTRL_REPORT_SIZE;
+
 		priv->temp_label = label_temp_sensors;
 		priv->virtual_temp_label = label_virtual_temp_sensors;
 		priv->calc_virt_temp_label = label_aquaero_calc_temp_sensors;
@@ -1443,6 +1459,11 @@  static int aqc_probe(struct hid_device *hdev, const struct hid_device_id *id)
 		priv->firmware_version_offset = AQUAERO_FIRMWARE_VERSION;
 
 		priv->fan_structure = &aqc_aquaero_fan_structure;
+
+		priv->ctrl_report_id = AQUAERO_CTRL_REPORT_ID;
+		priv->secondary_ctrl_report_id = AQUAERO_SECONDARY_CTRL_REPORT_ID;
+		priv->secondary_ctrl_report_size = AQUAERO_SECONDARY_CTRL_REPORT_SIZE;
+		priv->secondary_ctrl_report = aquaero_secondary_ctrl_report;
 		break;
 	case poweradjust3:
 		priv->status_report_id = POWERADJUST3_STATUS_REPORT_ID;